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分析了液压缸驱动重锤式碎石机冲击器的结构及其工作原理，建立了该液压冲击器的数学模型．在此基础上，利用样机ＹＳ－５０Ａ 型液压碎石机冲击器的主要结构参数，从理论上分析了插装锥阀的开口量、冲击器的偏斜角度、系统供油压力和驱动缸有效作用面积比对其性能的影响．结果表明，这种液压缸驱动重锤式冲击器效率较高，易于实现大冲击能，其冲击频率在一定范围内无级可调，并可在较大偏斜角度情况下进行有效破碎作业．为新型大冲击能、低频无级可调式液压冲击器的研制提供了重要的理论依据．
The structure and working principle of hydraulic cylinder driven hammer hammer are analyzed, and the mathematical model of the hydraulic impactor is established. On this basis, using the main structural parameters of impactor of prototype YS-50A hydraulic breaker, the opening of the inserted cone valve, the deflection angle of impactor, the system supply pressure and the effective cylinder are analyzed theoretically Effect of area ratio on its performance. The results show that this kind of hydraulic cylinder driven hammer hammer has higher efficiency and is easy to realize large impact energy. Its impact frequency can be steplessly adjustable within a certain range and can be effectively crushed at a large deflection angle. For the new large impact energy, low frequency stepless adjustable hydraulic impactor developed provides an important theoretical basis.